Brick-kiln



gno Model.)

J. BLUM. Brick Kiln.

No. 2315893.` i Patented Sept'. 7,1880'.

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M y 'f3f- NJNS. FHOTO-LITHOGRAFHER, WASHINGTCN. D. C`

UNITED STATES PATENT OFFICE.,

JOSEPH BLUM, OF CHICAGO, ILLINOIS.

SPECIFICATION forming part of Letters Patent No.` 231,893, datedSeptember '7, 1880.

Application filed June 3, 1880.

To all whom it may concern Be it known that I, JOSEPH BLUM, of Ghicago,in the county of Cook and State of Illinois, have invented certain newand useful Improvements in Brick-Kilns, of which the following, inconnection with the accompanying drawings, is a specification. v

In the drawings, Figure l is a front view of a brick-kiln containing myimprovements. Fig. 2 is a section in the plane of the line a' x of Fig.1, and Fig. 3 is a section in the plane of the line y y of Fig. l.

Like letters of reference indicate like parts.

My invention has for its object the improvement of the construction andoperation of the means employed for improving the combus. l[ion andproducing heat in abrick-kilns of the class in which grates are employedin connection with other parts cooperating therewith for receiving orcontaining the fuel.`

In the drawings, A represents the wall of a brick-kiln, and B is anopening therein for admitting the fuel.

C is a grate arranged horizontally, by preference, and extending throughthe opening B from the face of the wall A and considerably back from theopenin g B or back into the kiln, as shown.

D D are verticalianges or supports extending downward from the sides ofthe grate C,

and also forward or outward therefrom considerably beyond the outer faceof the wall A. These parts or iianges I cast, by preference, with thegrate proper, or with the part containing or constituting the bars onwhich the fuel is to be placed.

In the example shown the ilanges D D are formed to support the gratehorizontally above the oor of the kiln 5 but the rear end of the gratemay be lower than the forward end if deemed best, the principal objectof the flan ges D D being to support the grate sufciently above the ioorof the kiln to form a good draft-passage under the grate.

The grate and its iianges, which, as stated, preferably constitute onepart, are intended to be removable from the opening B, and toi'acilitate removal I make the rear part of the grate contracted ornarrower than the forward part, as shown, so that if the rear part ofthe grate should be expanded by the action of the heat it will still benarrow enough to allow (No model.)

the grate to be drawn out of' the opening B with ease.

E is the door. This door stands vertically infront of the opening B whenthat opening is to be closed, and the lower edge ot' the door rests onthe upper edges of the flanges D D, the latter being slightly notched,as shown at a a, t'o receive the said edge and form a bearing therefor.

ln order to cause the door E when closed to stand closely against theouter wall of the kiln without the aid otl special fastenings I set outslightly from the said wall those parts of the lower edge of the doorwhich bear upon the `ianges D D, as shown at a a', thus throwing thecenter ot' gravity ofthe door inward from its bearings, and causing itto remain closedA automatically.

F is a tongue projecting inwardly from the lower edge of the door Esufficiently to extend under the front part or edge ot' the grate C whenthe door is fully open or arranged horizontally, as shown, so as then toret-.1in the door in that position.

G G are Side grates projecting vertically above the outer ends of theiianges D D, and

.b b are inwardly-extending pins on the lower portion of the saidgrates. rIhe pins b b extend freely through and inwardly beyond theflanges D D.

H H are bolts passing through the flanges D D and the grates G G, and II are nuts on the outer ends of the said bolts, the said bolts and nutsbeing employed in connection with the pins b b for holding the sidegrates firmly in their vertical position.

By employing the pins b b in the manner shown and described only onebolt and nut is required for each side grate.

In the upper edges of the grates Gr Gr are small notches c c, and J is across-bar or rod lying therein.. The purpose of the rod J and notches ccis to admit of the door E being supported in a partly-open position, asindicated by the dotted or broken lines in Fig. 2; but grooves c c',extending across the door, will serve the same purpose.

K is a handle on the door E. L is a damper, the lower corners ot' whichbear on the pins b b, so that it may be tilted or swung into either itsopen or closed position.

'Io use my improvements as and for the pur- IOO poses for which they areintended I proceed as follows: After starting a fire, which may be donein the usual manner, the door E may be opened fully, as indicated inFigs. 2 and 3. When it is in that position, the fuel, which consistsofcoal, may be thrown upon it, in feeding the fire and when only amoderate degree of heat is required. rIhe grates G G not only serve tokeep the fuel upon the open door E, but admit air to it, so that thefuel thrown will become ignited, it being understood that aportion ofthe incandescent fuel on the grate C will fall out upon the door E whenthe latter is fully open. The door C, however, may be only partlyopened, as heretofore explained, and the extent to which it may beopened may be varied, thus varying the degree of heat and draft. Whenthe door is wholly closed the heat and draft may be regulated by meansof the damper L, which may also be either open or closed when the dooris either partly or Wholly open. By throwing the fuel on the wholly-opendoor, and then closing the door, the fuel on the door will necessarilybe pushed upon the grate.

It will be perceived from the foregoing description and from referenceto the drawings that the grate and its attachments are not onlyremovable from the kiln, and that they may be applied and removed withfacility, but that all the parts are simple in their construction andoperation, and that theheat and draft may be greatly varied and easilyregulated, and alsothat the operation of feeding the fuel to the kiln isfacilitated.'

I do not here intend to restrict myself to making the interior grate andits supportinganges all in one part, nor precisely to theherein-described mode of applying the outer or vertical grates; but,

Having thus described my invention, what Iclaim as new, and desire tosecure by Letters Patent, is

1. The removable brick-kiln grate G, made contracted or narrowest at itsinner end, to facilitate its removal after being expanded by excessiveheat during use, substantially as specified.

2. The combination of the Vertical external grates, G G, with avertically-swinging firedoor and a horizontal raised brick-kiln grate,substantially as and for the purposes speciied.

3. The combination of the horizontal grate C, provided with thedownwardly-extending anges or supports D D, extending outward or forwardbeyond the said grate, the vertical external grates, G G, applied to theexternal parts of the said flanges, the vertically-swinging tire-door E,and the adjustable rod J, substantially as and for the purposesspeciiied.

4. The combination of the horizontal grate C, the supports D D,extending outward or forward from the said grate, the side grates. G G,having thereon the pins or studs b b, and the bolts H H and nuts I I,substantially as and for the purposes specified.

5. The combination, with a brick-kiln grate, of the fire-door C, havingoutward extensions, a a', adapted and arranged substantially as shownand described, to throw the body of the door, when closed, between itsbea-rings and thc outer face of the brick-kiln walls, for the purpose ofthereby causing the door to remain closed by gravitation.

6. The combination of the grate C, flanges orsupports D D, grates GG,door C, and damper L, all constructed, arranged, and operatingsubstantiallyas and for the purposes specified.

JOSEPH BLUM.

Titnesses F. F. WARNER, W. S. BAKER.

